Worth



(1&0 Model.)

A. B. WADSWORTH.

GENTERING REST 0R OHUGK FOR LATHES. N0.-Z69,750.

Patented De0.26,1882.

INVBNTOR:

BY Lb/WM ATTORNEYS WITNESSES /r4e7 I UNITED STATES PATENT OFFICE.

AUGUSTUS B. WADSWORTH, OF OONTOOCOOK, NEW HAMPSHIRE, ASSIGNOR OF ONE-THIRD TO WALTER S. DAVIS, OF SAME PLACE.

CENTERING REST OR CHUCK FOR LATHES.

SPECIFICATION forming part of Letters Patent No. 269,750, dated December 26, 1882.

Application filed June 2, 1882.

To all whom it may concern:

Be it known that I, AUGUSTUS B. \VAns- WORTH, of Oontoocook, in the county of Merrimack and State of New Hampshire, have invented a new and Improved Oentering Rest or Ohuck for Lathes, of which the followingis afull, clear, and exact description.

My invention consists of a chuck or rest adapted to be attached to any lathe for hold- \0 ing and centering the work by means of setscrews. laterally fol-turning the piece of work tapering.

Reference is to be had to the accompanying drawings, forming part of this specification, in

' which-similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a front elevation, partly in section, of my new and improved rest or chuck; and Fig.2 is a sectional elevation of the same,

2o taken on the line a: w of Fig. l.

' A represents a collar cast with the bed piece or plate B; and 0 represents a sleeve,which is formed with the hearing d to run in the collar A. The sleeve is held in the collar preferably by means of the annular plate D and screwboltsff.

In the flange F of the sleeve Oare placed the radial set-screws H H, preferably four in number, for holding and centering the work.

0 It" the work is plain straight work, the piece is simply passed through the sleeve 0 and centered by testing and turning the set-screws H tween the screws.

The rest is adapted to be adjusted (No model.)

one Way or the other, as required, which at the same time firmly secures the piece be- It' the work isto be tapered, the collar A is to be moved laterally one way or the other upon the plate E, and secured thereon in the proper position by the screwbolt G, which passes up through the slot J of the plate E, and through the plate B of the 4.0 collar. This screw-bolt also secures the rest or chuck upon the bed-pieces ot the lathe.

The plates B and G are of the same size, and they are preferably fitted together by the tongue h and the groove 1', as shown in Fig. 2, 5 for keeping the collar A always in its proper relative position while being moved laterally.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination, with collar A, of the annular plate D and the sleeve (1, provided with the bearing (1, and flange F, said flange carrying the centering device, as shown and described.

2. The comhination,.with the bed-plate carrying collarA, and havinggroovet', the flanged sleeve O, and the plate I), of the plate E, having a tongue, h, and slot J, and the screw-bolt G, as and for the purpose specified.

AUGUSTUS B. WADSWORTH. Witnesses: JOHN F. J oNEs,

lsAAo D. MERRILL. 

